Venetian blind



A ril 26,1938. H. a. BALTHASAR 2,115,663

VENETIAN BLIND Filed wk. so, 1956 Patented Apr. 1938 PATENT OFFICE,

VENETIAN sum) Harry G. Blltliilll',

West Tower Park, Ohio, as- I sic-nor to The Edward J. Hon Company; Cincinnati, Ohio, a corporation of Ohio Application December 30, 1938, Serial No. 118,341

8 Claim.

This invention relates to Venetian blinds and is particularly directed to an improved device for controlling the angular positions of the slats thereof.

In the operation of the conventional Venetian blind, the user adjusts the angular positions of the slats dependent on the degree of light outside the window or the degree desired inside the room. The slats are always disposed in parallelism. Very often it happens that the slats, due to the position of the sun. cannot be arranged so as to give sufficient light in the room without admitting the direct rays of the sun. Also it frequently occurs that the user of the blind is desirous of having a maximum of light and at the same time wishes to maintain the privacy of the room.

With no opportunity of varying the angle of the slats with respect to each other, the flexibility and adaptability required to satisfy the particular demands has been lacking. There are instanceswhere it would be desirable to haveall of the slats, let us say half way up from the bottom in fully closed or vertically disposed position, whereas, the upper slats are fully open or horizontally disposed. Also the reverse condition may exist when it is desirable to have the upper part completely closed.

It is therefore, the object of the present invention to provide increased flexibility for a Venetian blind whereby the slats may be set at different degrees of inclination relative to each other.

Described more specifically, the invention resides in the conception of a device which permits a complete closing or opening of all slats, or a complete opening of a portion of the slats and closing of the balance, that is, permits the slats in one portion of the blind to be set at different degrees of inclination relative to the slats in the other portion of the blind.

It is a further object of the invention to provide a device for this purpose which is extremely simple, which may be applied to the blind at dif-- ferent positions and, which may be attached to any standard Venetian blind.

It is a further object of this invention to provide a device for use on Venetian blinds which will not interfere with the manipulation of the normal slat tilting means and'which will be effective for causing opening of one section while closing another section by manipulation of the normal slat adjusting means.

Other objects and further advantages will be more fully apparent from the description of the accompanying drawing, in which:

Figure 1 is a front or inside view of a window illustrating a Venetian blind mounted therein with the present invention applied thereto.

Figure 2 is a sectional view taken on line 2-2, Figure 1, illustrating the device of the invention in operation wherein the lower half of the slats is closed and the upper half is open.

Figure 3 is a view taken similar to Figure 2, but illustrating the reverse condition wherein, the upper half of the slats is closed.

Figure 4 is a fragmentary perspective view 11- lustrating the device in a position of non-use.

Figure 5 is a fragmentary view taken similar to Figure 4, but showing the device in operation.

Figure 6 is a sectional view taken on line 8-6. Figure 5, detailing the device in the position of Figure 5.

Figure 7 is a perspective view showing the 00- operating elements of a modified form of the device applied to an elevating tape of the blind in position of non-use.

In general, the principle on which the device or devices of this invention operate will be clear from the following description.

The slats are placed in the conventional blind so that the upper and lower rails and the side 25 edges of the slats are disposed generally in the form of a parallelogram. The angles are always the same in the standard Venetian blind operating by means of any standard tilt construction. The present device when applied, changed this parallelogram to form a trapezoid wherein, the lines taken along the side edges of the slats are parallel to each other, but the top and bottom rails are at different angles. It is to be noted that in actual operation the devices do not form a perfect trapezoid but portions of those tapes opposite to the tapes to which the devices are attached are in different planes. I

Referring to the drawing, Figures 1 to 6 inclusive, a window frame is generally indicated at ID. The elevating mechanism of the blind is not shown since it may be of any conventional well known form operated by means of a cord I I. As shown, an upper rail I2, is provided tiltably mounted in the upper support l3 of the blind. Tilting is accomplished by means of a tilting cord 9. Spaced pairs of tapes II, are provided, the tapes of each pair having their upper ends fixed to the opposite edges of the head rail. The lower ends of these tapes are fixed to the lower rail ii, in the same manner.

In accordance with the conventional practice, parallel cross tapes l6 are provided for each pair of tapes thus forming a, structure, resembling a ladder, for supporting the slats. The slats them- 55 rail, being raisedand lowered by means within the support It operated by the cord.

In one embodiment of the present invention cooperating or component clip parts ll, are attached to the respective elevator tapes at the inside of the blind, midway of the lengths thereof. One of-the parts is a hook I1, and the other, an eyelet or cross bar element ll engageabie over the book. These elements are secured to the tapes byrivets llandnormallyspacedapartasuihcient distancetotakeuporsnuba portionoftape substantially equal in length to the spacing of the respective slats. In other words the tape is snubbed and the snubbed portion 2. is disposed between the slats. This changes the angle of all slats below the clips with respect to all slats above the clips.

In the device of Figu the 611D! il able along the tapes. Each element is formed by stamping and includes parallel slots II disposed crosswise to the tape and through which the tape is laced. One element provides an eyelet .tang i2 and the other ahook tang I8 cooperating in the same manner as the hook and eye of the first embodiment. The elements of the last described device may be moved up and down the tapes to any desired position. By manipulating the tilting cord, the positions of the slats above and below the clips may be reversed (see Figures 2 and 8). The section of slats below the clips may be in closed position and the upper section open as in Figure 2. This gives ample light through the fully opened upper slats and at the same time maintains the privacy of the room.

If the user wishes the light, through the lower section operation of the tilting card will move the slats to the position of Figure 3 and the lower slats are fully opened for procuring a maximum amount of light through the lower section and the' slats of the upper section are fully closed for blocking the light through the upper section. The latter is of course desirable in instances where the sun rays coming through the upper section might be undesirable in the room. There are, of course, variations between these extreme positions which will place all slats in slightly opened positions despite the difference of angular position.

Having described my invention, I claim:

1. A Venetian blind control device consisting of a pair of component parts adapted to be fastened together, said parts including parallel slots through which the particular supporting tape of a,us',ess

thevenetianblindmaybelaoedsaid component parts therefore adjustable relative to each other of the tape therebetween. In a Venetian blind including aiat supporting device adapted to be attached to the one of the'tapes in spaced relation, and including component portions adapted 4. A Venetian blind control apparatus, including the supporting tapes of the blind providing cross supporting tapes and slats supported upon said supporting tapes, a pair of cooperating hook elements used to each of the tapes on one side of the blind and adapted \to be secured together when drawn toward each other, for snubbing the tape when fastened together and tilting the slats below the elements with respect to the slats above the elements.

5. A Venetian blind control device, comprising, a pair of cooperating elements adapted to be hooked together, said elements including attachment means for securing the same to the elevating tape of the Venetian blind.

6. A device for controlling the angular positionsof the slats oi Venetian blinds, adapted-to be associated with any one of the slat supporting tapes thereof, comprising a pair of elements adapted to be secured to the particular tape in adjustably spaced relation and including component hook portions adapted for attachment together for shortening the tape for changing the angular positions. of all slats below the device with respect to all slats above the-device.

7. A Venetian blind control device, consisting of a pair of elements cooperating for snubbing the elevating tape of the Venetian blind.

8. A Venetian blind control apparatus including the supporting tapes of the blind providing cross supporting tapes and slats supported upon said supporting tapes, a pair of cooperating hook elements having slots therein through which the tape is disposed, said elements adapted to be secured together when drawn toward each other and snubbing the tape when fastened together and tilting all of theslats below the elements with respect to the slats above the elements.

HARRY G. BALTHABAR. 

